The table below organises the data used in each exercise. Data consists in packages compresses with .tar.gz or zip, which can be downloaded by clicking on the provided links.
| Package | Date | Author | Description | Format | Download |
|---|---|---|---|---|---|
| wp121130_ex1-smodels | 08/03/2022 | J. Christensen-Daalsgard | Model-S | gong, amdl | ( ex1-smodels.tar.gz) |
| wp121130_ex1-omodels | (tbd) | ALL | oscillations | - | ( ex1-frequencies.tar.gz) |
| Model | Mass | [Fe/H] | alpha | ovsh | Nshell | Phase | EH | BV | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 0-001 | 1.00 | +0.0 | 2.09 | 0.0 | 4962 | MS | ✔ | ✔ | Model S (updated, 2005 OP EOS) |
| 0-002 | 1.00 | +0.0 | 2.09 | 0.0 | 4962 | MS | ✔ | ✔ | Model S (with full analytical CEFF) |
| Code | ASTEC (ongoing updates) | ||||
|---|---|---|---|---|---|
| Convection | Boehm-Vitense 1958 MLT, solar calibrated (alpha = 2.08984) | ||||
| Overshoot | None, for now | ||||
| Extra mixing | None, for now | ||||
| gradT | N/A, for now | ||||
| Wind | None | ||||
| Atmosphere | Fit to VAL C atmosphere | ||||
| Nuclear rates | Adelberger et al. 2011, which includes de “low” value of LUNA's N14+p | ||||
| Screening | Weak (Salpeter) | ||||
| EOS | Default: OPAL 2005 / Models _ceff_: CEFF | ||||
| Opacities | OPAL + Ferguson 2005 for low temperatures | ||||
| mDiffusion | Models _zdif_: He and heavy elements modelled as oxygen | ||||
| rLevitation | No | ||||
| Relevant constants | |||||
| G | 6.67232e-8 (cgs) | ||||
| References | Christensen-Dalsgaard(2008) Christensen-Dalsgaard (2021) | ||||
The most significant point is that the model using the OP equation of state shows departures probably related to the interpolation in the equation of state, which are absent in the CEFF model.